Struct TapTweakHash

pub struct TapTweakHash(/* private fields */);

Taproot-tagged hash with tag "TapTweak".

This hash type is used while computing the tweaked public key.

Implementations

impl TapTweakHash

pub fn from_raw_hash(inner: Hash<TapTweakTag>) -> TapTweakHash

Creates this wrapper type from the inner hash type.

pub fn to_raw_hash(self) -> Hash<TapTweakTag>

Returns the inner hash (sha256, sh256d etc.).

pub fn as_raw_hash(&self) -> &Hash<TapTweakTag>

Returns a reference to the inner hash (sha256, sh256d etc.).

impl TapTweakHash

pub fn from_key_and_tweak( internal_key: UntweakedPublicKey, merkle_root: Option<TapNodeHash>, ) -> TapTweakHash

Creates a new BIP341 TapTweakHash from key and tweak. Produces H_taptweak(P||R) where P is the internal key and R is the merkle root.

pub fn to_scalar(self) -> Scalar

Converts a TapTweakHash into a Scalar ready for use with key tweaking API.

Trait Implementations

impl AsRef<[u8]> for TapTweakHash

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<[u8; 32]> for TapTweakHash

fn as_ref(&self) -> &[u8; 32]

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<[u8]> for TapTweakHash

fn borrow(&self) -> &[u8]

Immutably borrows from an owned value.

impl Clone for TapTweakHash

fn clone(&self) -> TapTweakHash

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TapTweakHash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TapTweakHash

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<TapTweakHash, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for TapTweakHash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<&TaprootSpendInfo> for TapTweakHash

fn from(spend_info: &TaprootSpendInfo) -> TapTweakHash

Converts to this type from the input type.

impl From<Hash<TapTweakTag>> for TapTweakHash

fn from(inner: Hash<TapTweakTag>) -> TapTweakHash

Converts to this type from the input type.

impl From<TapTweakHash> for Hash<TapTweakTag>

fn from(hashtype: TapTweakHash) -> Hash<TapTweakTag>

Converts to this type from the input type.

impl From<TaprootSpendInfo> for TapTweakHash

fn from(spend_info: TaprootSpendInfo) -> TapTweakHash

Converts to this type from the input type.

impl FromStr for TapTweakHash

type Err = HexToArrayError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<TapTweakHash, Self::Err>

Parses a string s to return a value of this type.

impl Hash for TapTweakHash

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Hash for TapTweakHash

const LEN: usize = 32usize

Length of the hash, in bytes.

const DISPLAY_BACKWARD: bool = false

Flag indicating whether user-visible serializations of this hash should be backward. For some reason Satoshi decided this should be true for Sha256dHash, so here we are.

type Engine = <Hash<TapTweakTag> as Hash>::Engine

A hashing engine which bytes can be serialized into. It is expected to implement the io::Write trait, and to never return errors under any conditions.

type Bytes = <Hash<TapTweakTag> as Hash>::Bytes

The byte array that represents the hash internally.

fn engine() -> Self::Engine

Constructs a new engine.

fn from_engine(e: Self::Engine) -> Self

Produces a hash from the current state of a given engine.

fn from_slice(sl: &[u8]) -> Result<TapTweakHash, FromSliceError>

Copies a byte slice into a hash object.

fn from_byte_array(bytes: Self::Bytes) -> Self

Constructs a hash from the underlying byte array.

fn to_byte_array(self) -> Self::Bytes

Returns the underlying byte array.

fn as_byte_array(&self) -> &Self::Bytes

Returns a reference to the underlying byte array.

fn all_zeros() -> Self

Returns an all zero hash.

fn hash(data: &[u8]) -> Self

Hashes some bytes.

fn hash_byte_chunks<B, I>(byte_slices: I) -> Self

where B: AsRef<[u8]>, I: IntoIterator<Item = B>,

Hashes all the byte slices retrieved from the iterator together.

impl<I: SliceIndex<[u8]>> Index<I> for TapTweakHash

type Output = <I as SliceIndex<[u8]>>::Output

The returned type after indexing.

fn index(&self, index: I) -> &Self::Output

Performs the indexing (container[index]) operation.

impl LowerHex for TapTweakHash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Ord for TapTweakHash

fn cmp(&self, other: &TapTweakHash) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TapTweakHash

fn eq(&self, other: &TapTweakHash) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TapTweakHash

fn partial_cmp(&self, other: &TapTweakHash) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl SerdeHash for TapTweakHash

const N: usize = 32usize

Size, in bits, of the hash.

fn from_slice_delegated(sl: &[u8]) -> Result<Self, FromSliceError>

Helper function to turn a deserialized slice into the correct hash type.

fn serialize<S>( &self, s: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Do serde serialization.

fn deserialize<'de, D>(d: D) -> Result<Self, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Do serde deserialization.

impl Serialize for TapTweakHash

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl UpperHex for TapTweakHash

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for TapTweakHash

impl Eq for TapTweakHash

impl StructuralPartialEq for TapTweakHash